Test processing method for multi-stage ship lock local linkage control system

Abstract

A kind of test processing method of multi-stage ship lock local linkage control system, through the steps of closing linkage, water transmission linkage, centralized control test, locking detection, synchronous control, fault alarm and fault handling, the information generated to local by centralized control system is short instruction information, after receiving instruction, local judges operating condition, and automatically executes.The centralized control sends linkage water transmission operating state and water replenishing operating state to local, if communication interruption or operating interruption occurs in the process of centralized control linkage water transmission control and centralized control water replenishing control, local automatically executes programmed emergency valve closing protection;At the same time, fault is classified and defined, shielding, resetting and confirming fault under linkage condition, to realize self-controllable in the process of multi-stage ship lock water transmission.

Description

Technical Field

[0001] This invention belongs to the field of multi-level lock linkage testing technology, and relates to a testing and processing method for a multi-level lock local linkage control system. Background Technology

[0002] The multi-level lock local control system uses PLC signal acquisition and output mode for control, including redundant limit switch detection, opening degree detection and calibration, limit delay signal transmission, redundant digital output, redundant analog input, and redundant analog output. Its control functions employ local station settings for "centralized control-local-maintenance," "intermediate pier side-both sides-non-intermediate pier side," and "run-pause-jog" control modes. In the local station's programmed operation state, the "centralized control-local-maintenance" mode is switched via control buttons or touchscreen buttons, with synchronous switching between the intermediate pier side and non-intermediate pier side control rooms. The system starts in the default "maintenance" control mode; in both "centralized control" and "local" modes, it automatically switches to "both sides" and "run" control modes. During lock valve operation, switching between the "centralized control-local-maintenance" and "intermediate pier side-both sides-non-intermediate pier side" operating modes automatically terminates the current lock valve operation.

[0003] As can be seen, the control system of a multi-level lock is quite complex. The key nodes mainly include gate linkage, water conveyance linkage, fault alarm and handling, etc. How to conduct system testing on these key nodes and how to handle faults are the key issues we are currently facing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a test and processing method for a multi-level lock local linkage control system, which tests the linkage nodes in the multi-level lock control process and summarizes and processes the faults that may occur in the control process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a testing and processing method for a multi-level lock local linkage control system, comprising the following steps:

[0006] S1, gate closing linkage: Set up a gate closing linkage process in the local system to achieve automatic unlocking and closing of the gate;

[0007] S2, Water conveyance linkage, sets the local linkage command process, prompts for operation confirmation when the control conditions are met, and starts the linkage control;

[0008] S3, centralized control test, enables remote centralized monitoring and operation of local gate valves and anti-collision devices through communication with the centralized control system; including communication between the centralized control PLC and the local PLC, and communication between the centralized control I / O server and the local PLC;

[0009] S4, Lockout Detection, employs hardware lockout to ensure safe operation of the lock;

[0010] S5, synchronous control, controls the gate waiting position, the miter gate speed change operation, and the miter gate synchronous correction respectively;

[0011] S6, fault alarm, classifies and defines faults;

[0012] S7, Fault Handling, involves partitioning, masking, resetting, and confirming faults.

[0013] In S1, during the gate closure linkage process, when a ship passes through the lock, a gate closure warning signal is sent, and at the same time the gate is unlocked. If the unlocking is in place, the gate is closed, and a gate closure completion signal is issued after the gate is closed.

[0014] In S2, the water transfer linkage command process includes:

[0015] S2-1: If the water supply is fault-free, open the valve to supply water. If the water level is horizontal, a gate opening warning will be issued and a gate opening signal will be sent. Once the gate is fully opened, close the valve and the linkage will end.

[0016] S2-2, When the water supply valve is opened, if the auxiliary valve level signal or the horizontal warning water level difference signal is received, the auxiliary valve will be opened and the horizontal warning will be sent respectively.

[0017] S2-3: If the water supply is fault-free, open the valve to supply water. If the water level is not horizontal, send a dynamic water shut-off valve signal or open the dynamic water shut-off valve to the set opening degree to supply water.

[0018] S2-4 If a malfunction occurs during water delivery, the programmable emergency valve will be shut off to terminate the linkage.

[0019] In S3, communication between the centralized control PLC and the local PLC includes: the local PLC sending local control mode, gate valve operation information, hydraulic system operation information, anti-collision operation information, and gate head water level information to the centralized control PLC; and the centralized control PLC sending control command information to the local PLC. Communication between the centralized control I / O server and the local PLC includes: the centralized control I / O server reading local PLC I / O information, fault diagnosis information, complete gate head operation status information, and operation parameter information from the local PLC; and the centralized control I / O server sending control command information and parameter setting information to the local PLC.

[0020] In S4, the interlock detection includes the following steps:

[0021] S4-1, Local PLC collects the signal status of each link in the interlocking signal transmission;

[0022] S4-2, When the lock operation requires water replenishment, if the local water replenishment permission switch is not set to water replenishment permission, a water replenishment warning will be generated.

[0023] S4-3, when the gate head forced interlocking switch is not set to forced interlocking permission, automatically reset the local or centralized control software forced interlocking signal;

[0024] S4-4: The local PLC generates a software interlock signal based on the position information of the upper and lower gate valves and the forced interlock signal from the local or centralized control software. An alarm will be triggered if the software interlock signal is inconsistent with the hardware interlock signal.

[0025] In S5, the gate closing waiting position control includes the following steps:

[0026] SA5-1, to prevent the guide card from being squeezed and collided when closing the gate, when closing the gate on both sides, it should be ensured that the guide card enters synchronously. When closing the gate on both sides, a synchronous waiting position is set. The synchronous waiting position is determined by the opening meter. The waiting position travel is 7100mm. The waiting position is within ±15mm of the waiting position travel.

[0027] SA5-2, when the synchronization difference between the two gates exceeds the set range of ±25mm, both gates will unload and wait in the synchronization waiting position before closing the gates synchronously.

[0028] SA5-3, during the gate closing process, the synchronization difference between the two gates does not exceed the set range, which does not affect the synchronous gate closing and does not require unloading and waiting;

[0029] SA5-4: When the synchronization difference between the two gates exceeds the set range, and the travel of one gate is greater than the waiting position travel while the travel of the other gate is less than the waiting position travel, the gate must not be closed.

[0030] When the SA5-5 gate opening device malfunctions on one side, the waiting position cannot be determined. During non-maintenance operation, it is prohibited to close both gates simultaneously. During maintenance operation, the gate can be closed at a low speed.

[0031] In S5, the variable speed operation control of the miter gate includes the following steps:

[0032] SB5-1, when the gate is opened and closed at a constant speed, the load is saddle-shaped. When the acceleration, constant speed, and deceleration processes of the gate opening and closing are controlled in the opposite way to the saddle shape, the load of the gate hoist is balanced during the gate opening and closing process.

[0033] SB5-2 automatically calculates the acceleration and deceleration of the gate during variable-speed operation, based on the set constant speed, acceleration and deceleration inflection point settings.

[0034] SB5-3, for gate speed change operation, both gates must be opened and closed synchronously from the open end position or the closed end position;

[0035] SB5-4: During the variable speed operation of the gate, synchronous correction control is performed. When the stroke difference between the two gates exceeds the synchronous set value, synchronous correction and variable speed control are stopped, and the gate switches to low speed operation.

[0036] SB5-5: When a gate is operating on one side, when the gate opening instrument on one side malfunctions, when the gate starts to open or close from the middle position, or when the travel difference between the two gates exceeds the synchronization setting value, the gate will open and close at a low speed.

[0037] SB5-6, In maintenance operation mode, when the gate is opened and closed at low speed, the gate opening and closing speed can be manually increased or decreased via the touch screen;

[0038] SB5-7: To ensure the consistency of limit switch signals when the gate stops, the gate operates at the stopping speed when the gate opening is close to the final position of the switch.

[0039] In S5, the synchronous correction control of the miter gate includes the following steps:

[0040] SC5-1 employs synchronous correction control during dual-side gate speed change operation;

[0041] SC5-2 performs correction control by synchronizing one side gate with the other side gate, and the gate tracking objects can be switched;

[0042] SC5-3, the gate synchronous correction adopts PID control, and the PID parameters can be set;

[0043] SC5-4: When the travel difference between the two gates exceeds the synchronous operation setting value, the synchronous correction and speed change control will stop and switch to low-speed operation.

[0044] In S6, based on operation and maintenance habits, faults are classified into Class A faults, Class B1 faults, Class B2 faults, Class B3 faults, and Class C faults. Class A faults are warning faults and will trigger an alarm as Class A faults. Class B1 faults are equipment component faults and will trigger an alarm as Class B1 faults, stopping the operation of the associated equipment component. Class B2 faults are regional faults and will trigger an alarm as Class B2 faults. Class B3 faults are local substation faults and will trigger an alarm as Class B3 faults. Class C faults are process protection faults and will trigger an alarm as Class C faults.

[0045] In S7, faults are divided into PLC diagnostic faults, gate faults, power supply faults, hydraulic faults, gate faults, valve faults, and auxiliary equipment faults. For faults after being divided, fault masking, fault reset, or fault confirmation can be selectively performed.

[0046] The main beneficial effects of this invention are as follows:

[0047] The information sent from the centralized control system to the local system is in the form of short command messages. Upon receiving the commands, the local system assesses the operating conditions and executes them automatically. The centralized control system sends the coordinated water supply and replenishment operation status to the local system. If communication or operation is interrupted during the coordinated water supply or replenishment control processes, the local system automatically executes the programmed emergency valve shut-off protection. The centralized control function test serves to verify the interface between the local system and the centralized control system.

[0048] The system classifies and defines faults, and enables the shielding, reset, and confirmation of faults under linkage conditions, thereby achieving autonomous control during the water conveyance process of multi-level locks. Attached Figure Description

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] Figure 1 This is a flowchart of the multi-level lock closure linkage control of the present invention.

[0051] Figure 2 This is a flowchart of the multi-level lock water conveyance linkage control of the present invention.

[0052] Figure 3 This is a flowchart of the local control process of the present invention.

[0053] Figure 4 This is a block diagram of the input signal detection for the present invention.

[0054] Figure 5 This is a valve control diagram for the present invention.

[0055] Figure 6 This is a fault diagnosis diagram for the present invention.

[0056] Figure 7 This is a diagram defining the fault bytes of this invention. Detailed Implementation

[0057] like Figures 1-7 A testing and processing method for a multi-level ship lock local linkage control system includes the following steps:

[0058] S1, gate closing linkage: Set up a gate closing linkage process in the local system to achieve automatic unlocking and closing of the gate;

[0059] S2, Water conveyance linkage, sets the local linkage command process, prompts for operation confirmation when the control conditions are met, and starts the linkage control;

[0060] S3, centralized control test, enables remote centralized monitoring and operation of local gate valves and anti-collision devices through communication with the centralized control system; including communication between the centralized control PLC and the local PLC, and communication between the centralized control I / O server and the local PLC;

[0061] S4, Lockout Detection, employs hardware lockout to ensure safe operation of the lock;

[0062] S5, synchronous control, controls the gate waiting position, the miter gate speed change operation, and the miter gate synchronous correction respectively;

[0063] S6, fault alarm, classifies and defines faults;

[0064] S7, Fault Handling, involves partitioning, masking, resetting, and confirming faults.

[0065] Example 1,

[0066] like Figure 1 As shown, in the gate closing linkage process, when a ship passes through the gate, a gate closing warning signal is sent, and at the same time the gate is unlocked. If the unlocking is in place, the gate is closed. After the gate is closed, a gate closing end signal is sent.

[0067] The gate linkage enables the gate head to issue a closing warning, automatically unlock, and close the gate.

[0068] Example 2,

[0069] like Figure 2 As shown, the water conveyance linkage includes valve opening, water conveyance, valve closing, level warning, gate opening warning, and gate opening and valve closing steps.

[0070] If the water supply is functioning without faults, the valve is opened to supply water. If the water level is horizontal, a gate opening warning is issued and a gate opening signal is sent. Once the gate is fully opened, the valve is closed, and the linkage ends.

[0071] When the water supply valve is opened, if an auxiliary valve level signal or a horizontal warning water level difference signal is received, the auxiliary valve will be opened and a horizontal warning will be sent respectively.

[0072] If the water supply is functioning properly, the valve is opened to supply water. If the water level is not horizontal, a signal to shut off the water supply valve is sent or the water supply valve is opened to the set opening degree to supply water.

[0073] If a malfunction occurs during water delivery, the programmable emergency valve will be shut off, terminating the linkage.

[0074] In the local linkage control mode, after receiving the local linkage command, if the linkage control conditions are met, a confirmation prompt will appear. After the operator confirms, the linkage control will be started.

[0075] Example 3,

[0076] Centralized control communication includes communication between the centralized control PLC and the local PLC, and communication between the centralized control I / O server and the local PLC. Through communication with the centralized control system, remote centralized monitoring and operation of local gate valves and anti-collision devices can be realized. The purpose of testing the interface between the local system and the centralized control system is to verify the centralized control function.

[0077] Communication data between centralized control PLC and local PLC:

[0078] The local PLC sends local control mode, gate valve operation information, hydraulic system operation information, anti-collision operation information, gate head water level information, etc. to the centralized control PLC;

[0079] The centralized control PLC sends control command information to the local PLC.

[0080] Communication between the centralized control I / O server and the local PLC:

[0081] The centralized control I / O server reads local PLC I / O information, fault diagnosis information, complete gate head operating status information, and operating parameter information from the local PLC.

[0082] The centralized control I / O server sends control commands and parameter settings to the local PLC.

[0083] The information sent from the centralized control system to the local area is a short instruction message. After receiving the instruction, the local area judges the operating conditions and executes it automatically.

[0084] The centralized control system sends the status of the water supply and replenishment operations to the local area. If communication or operation is interrupted during the centralized control system's water supply or replenishment control, the local area will automatically execute the program-controlled emergency valve shut-off protection.

[0085] Example 4,

[0086] Key control processes: To ensure the safe operation of the lock, local control employs hardware interlocking, including detection of the interlocking relationship between the upper and lower lock heads.

[0087] The local PLC collects the signal status of each link in the interlock signal transmission process to achieve safety monitoring of interlock signal transmission;

[0088] When the lock operation requires water replenishment, if the local water replenishment permission switch is not set to water replenishment permission, a water replenishment warning will be generated.

[0089] When the gate head forced interlocking switch is not set to forced interlocking permission, the local or centralized control software forced interlocking signal will be automatically reset.

[0090] The local PLC generates a software interlock signal based on the position information of the upper and lower gate valves and the forced interlock signal from the local or centralized control software. An alarm will be triggered if the software interlock signal is inconsistent with the hardware interlock signal.

[0091] Gate closing waiting position control:

[0092] To prevent the guide cards from being squeezed and collided when closing the gate, the guide cards should be entered synchronously when closing the gate on both sides. A synchronous waiting position should be set when closing the gate on both sides. The synchronous waiting position is determined by the opening meter. The waiting position travel is 7100mm. The waiting position is within ±15mm of the waiting position travel.

[0093] When the synchronization difference between the two gates exceeds the set range of ±25mm, both gates will unload and wait in the synchronization waiting position before closing the gates synchronously.

[0094] During the gate closing process, the synchronization difference between the two gates did not exceed the set range, so it did not affect the synchronous gate closing and there was no need to unload and wait.

[0095] If the synchronization difference between the two gates exceeds the set range, and the travel of one gate is greater than the waiting position travel while the travel of the other gate is less than the waiting position travel, the gate must not be closed.

[0096] When one side of the gate opening device malfunctions, the waiting position cannot be determined. When not in maintenance operation, it is forbidden to close both gates at the same time. When in maintenance operation, the gate can be closed at a low speed.

[0097] Miter gate speed control:

[0098] When the gate opens and closes at a constant speed, the load is saddle-shaped. When the acceleration, constant speed, and deceleration processes of the gate opening and closing are controlled in the opposite way to the saddle shape, the load of the gate hoist can be balanced during the gate opening and closing process.

[0099] Based on the set constant speed, acceleration and deceleration inflection points, the system automatically calculates the acceleration and deceleration of the gate during variable speed operation.

[0100] For gate speed change operation, both gates on both sides must be opened and closed synchronously from the open end position or the closed end position.

[0101] Synchronous correction control is performed during the variable speed operation of the gate. When the stroke difference between the two gates exceeds the synchronous set value, synchronous correction and variable speed control are stopped, and the gate switches to low speed operation.

[0102] When a gate is operating on one side, when the gate opening instrument on one side malfunctions, when the gate starts to open or close from the middle position, or when the travel difference between the two gates exceeds the synchronization setting value, the gate will open and close at a low speed.

[0103] In maintenance operation mode, when the gate is opened and closed at low speed, the gate opening and closing speed can be manually increased or decreased via the touch screen.

[0104] To ensure consistency in the signal transmission of the limit switch when the gate stops, it can be set to operate at the stopping speed when the gate opening is close to the final position of the switch.

[0105] Synchronous correction control of miter gates:

[0106] When the dual-side gates are operating at variable speed, synchronous correction control is used.

[0107] Correction control is performed by synchronizing one side gate with the other side gate, and the gates can switch the tracking objects.

[0108] The gate synchronous correction uses PID control, and the PID parameters can be set.

[0109] When the travel difference between the two gates exceeds the synchronous operation set value, the synchronous correction and speed change control will stop and the operation will switch to low speed.

[0110] Example 5,

[0111] In the above control method, to prevent the gate arch from collapsing and deforming, and for overfilling, over-discharge, and overload protection, it is also necessary to: decompose it into water discharge opening protection and water filling closing protection, which are controlled by solenoid valves, as follows:

[0112] When the gate valve is out of the closed position and the gate is not in the open or open position, the miter gate is allowed to move in the opening direction and the solenoid valve is energized.

[0113] When the upper and lower gate valves leave the closed position, and the V-shaped gate of this gate is not closed, the V-shaped gate is allowed to move in the closing direction, and the solenoid valve is energized.

[0114] Unilateral water transfer control:

[0115] During unilateral valve maintenance, the valve under maintenance may be disconnected to enter unilateral water supply operation mode, and the disconnected valve will not participate in the system operation.

[0116] Before and after valve removal, it is essential to ensure that the valve is in the fully closed position.

[0117] When operating with water supply on one side, the system automatically adjusts the parameters for intermittent valve opening and dynamic water valve closing.

[0118] Faults associated with shut-off valves do not trigger alarms.

[0119] Intermittent valve opening function:

[0120] To improve the water conveyance conditions of the high-head ship lock, during the linkage valve opening and water conveyance process, when the valve is opened to the set opening degree, it is necessary to pause for a set time and wait for the water flow to stabilize before continuing to open the valve.

[0121] Automatic valve opening intermittent conditions: non-maintenance control mode, water level difference greater than the set value, valve opening operation is paused when the valve is opened to the set opening degree, and valve opening operation is resumed after the pause time reaches the set time.

[0122] When the valve opening meter malfunctions, the valve opening degree is replaced by the valve opening duration.

[0123] When water is being pumped from one side, the intermittent valve opening operating parameters are automatically adjusted.

[0124] Dynamic water shut-off valve control function:

[0125] A moving water shut-off valve specifically refers to a moving water shut-off valve used to prevent overfilling or over-leakage during water transportation.

[0126] When water is supplied locally or through a centralized control system, the water supply valve will automatically close to a minimum opening when the water level difference reaches a set value. In centralized control mode, the centralized control system will issue a water supply valve closing command.

[0127] The parameters for the dynamic water valve include the water level difference parameters for both bilateral and unilateral water supply, the valve's minimum opening parameter, the water supply protection time parameter, and the valve closing time parameter when the opening meter malfunctions.

[0128] When the valve opening meter malfunctions, the valve closing time is replaced by the valve closing degree.

[0129] If the conditions for shutting off the water flow are met, but the valve is not activated within the water supply protection time or is not closed to a small opening when the valve is horizontal, a warning or alarm will be issued if the valve is not shut off normally.

[0130] Programmable water replenishment function:

[0131] After the lock's construction, the bottom sill of the first lock head will be raised to 139m, increasing the minimum navigable water level upstream to 145m. When the upstream water level is between 152.4m and 165.75m and the system operates at level five, situations may arise where the minimum navigable depth of 5m is not met, necessitating the activation of level five water replenishment mode. Based on the current minimum navigable depth requirement of 5m, level four water replenishment operation is not feasible; therefore, the system retains level four water replenishment mode.

[0132] When it is necessary to activate the water replenishment operation mode, the water replenishment control switch must be set to the water replenishment permission position at the local station on the side of the second gate pier. If water replenishment operation is required but the local station has not switched to the water replenishment permission position, the centralized control system should detect that the local water replenishment permission is not set and issue a warning, and restrict the corresponding water transmission control.

[0133] In centralized control operation mode, the centralized control system issues commands to the local area to operate water supply, open water supply valve, and close valve.

[0134] During the water replenishment process, the water replenishment valve is released from the interlocking relationship between the water replenishment valve and the adjacent gate during the opening and closing process.

[0135] Programmable emergency valve shut-off:

[0136] In local or centralized control operation mode, if a Class C fault occurs while water is being supplied, the system will automatically shut off the valve in an emergency.

[0137] In centralized control mode, the local station receives a programmable emergency valve closing signal from the centralized control station and initiates emergency valve closing control. In non-centralized control mode, the local station receives a programmable emergency valve closing signal from the local station and initiates emergency valve closing control.

[0138] In emergency valve shut-off control, terminate the control commands for all gate valves except the shut-off valve, start the pump, and directly load the shut-off valve control solenoid valve until the valve is shut off.

[0139] The six gates have a long corridor effect when conveying water, and the emergency valve closure is prohibited when the water difference is greater than the set value.

[0140] Hardware emergency shutdown or emergency valve closure interruption program-controlled emergency valve closure.

[0141] Example 6,

[0142] Fault classification is based on existing operation and maintenance practices:

[0143] Class A fault:

[0144] Class A faults are warning faults and will be flagged as Class A faults. They do not affect system operation.

[0145] Class B1 faults:

[0146] Class B1 faults are equipment component faults. According to the Class B1 fault alarm prompt, the operation of the associated equipment component will be stopped. If a Class B1 fault occurs in the area to which the gate or valve belongs or is in operation, it will enter a protective operation state until the gate or valve reaches its designated position.

[0147] In maintenance mode, if a Class B1 fault occurs in the area belonging to or associated with one gate or valve, operation on both sides of the gate or valve, or on the faulty side, is prohibited. In local mode, if a Class B1 fault occurs in any gate or valve area, local linkage operation is prohibited. Class B1 faults do not affect the issuance and execution of centralized control commands.

[0148] Class B2 faults:

[0149] Class B2 faults are regional faults and will trigger a Class B2 fault alarm. When a Class B2 fault occurs in the gate area, the gate on the faulty side will stop operating; in dual-side operation mode, both gates will stop operating. When a Class B2 fault occurs in the valve area, the valve on the faulty side will stop operating; in dual-side mode with valve opening, both valve opening operations will stop.

[0150] In maintenance mode, gates or valves without Class B2 faults can still operate on one side. In local mode, if a Class B2 fault occurs in either gate area, local linkage gate closure is prohibited; if a Class B2 fault occurs in either gate or valve area, local linkage water conveyance is prohibited. In centralized control mode, if a Class B2 fault occurs on either side, the local system will not respond to centralized control gate and valve opening control commands, while valves without Class B2 faults will still respond to and execute centralized control valve closing commands.

[0151] Class B3 faults:

[0152] Category B3 faults are local substation faults and are reported as Category B3 fault alarms. When a Category B3 fault occurs at a local station, the operation of gates and valves is stopped. When operating on both sides, except for valve closure, the operation of gates and valves on both sides is stopped.

[0153] In local mode, if a Class B3 fault occurs at either local station, local linkage operation is prohibited. In centralized control mode, if a Class B3 fault occurs at either local station, the local system will not respond to centralized control gate and valve opening control commands, while valves on the side without a Class B3 fault will still respond to and execute centralized control valve closing commands.

[0154] Class C faults:

[0155] Class C faults are process protection faults and will trigger a Class C fault alarm. When a Class C fault occurs, all gates and valves except for those in shut-off mode will be shut down.

[0156] In maintenance mode, valve shut-off can still be initiated even if a Class C fault occurs. In local and centralized control modes, emergency valve shut-off will be automatically executed if a Class C fault occurs and the valve is not fully closed.

[0157] Example 7,

[0158] Fault byte definition as follows Figure 7 As shown.

[0159] Example 8,

[0160] Derivative fault handling:

[0161] When fault A occurs, fault B will definitely occur; fault B is a derivative fault of fault A. Fault A is the parent fault of fault B.

[0162] When programming, it is necessary to clarify the derivative relationships between various faults to reduce duplicate alarms. When faults A and B exist simultaneously, only fault A should trigger an alarm. If fault A disappears but fault B still exists, fault B should trigger an alarm.

[0163] Faulty partition:

[0164] Based on existing operation and maintenance practices and considering the product characteristics, the fault zones are as follows:

[0165] PLC diagnostic fault zones

[0166] The faults originate from PLC diagnostic information, redundant modules, and network diagnostic information. PLC diagnostic faults are not differentiated between central diaphragm piers and non-central diaphragm piers, and are all classified as Class A faults.

[0167] Gate head type fault zoning,

[0168] Gate head faults originate from independent sensor diagnostic information, emergency control and emergency control circuit diagnostic information, interlocking circuit and interlocking diagnostic information, and control process diagnostic information. They are mainly Class A or Class C faults.

[0169] Power supply fault zones

[0170] Power supply faults originate from the diagnostic information of the power and distribution system of the local cabinet. They are distinguished between the side of the central partition and the side of the non-central partition, and belong to the common area of ​​the gate valve. They are mainly classified as Class A, Class B1, and Class B3 faults.

[0171] Hydraulic fault zones,

[0172] Hydraulic faults originate from diagnostic information of the hydraulic pump station system. They are distinguished between the side of the central diaphragm and the side of the non-central diaphragm, and belong to the common area of ​​gate valves. They are mainly classified as Class A, Class B1, and Class B3 faults.

[0173] Gate-type fault zoning,

[0174] Gate-related faults originate from diagnostic information from sensors specific to the gate area, as well as diagnostic information from other common systems that only affect gate operation, including faults in the power and distribution systems and hydraulic pump station systems that affect gate operation. Gate faults are categorized into those on the central pier side and those on the non-central pier side, and are mainly classified into Class A, Class B1, and Class B2 faults.

[0175] Valve-related fault zones

[0176] Valve-related faults originate from diagnostic information from sensors specific to the valve area, as well as diagnostic information from other common systems that only affect valve operation, including faults in the power and electrical distribution systems and hydraulic pump station systems that affect valve operation. Valve faults are categorized into those on the diaphragm side and those not on the diaphragm side, and are mainly classified into Class A, Class B1, and Class B2 faults.

[0177] Auxiliary equipment fault partitioning,

[0178] The diagnostic information for auxiliary equipment faults includes signal lights, boundary screens, dry oil pumps, drainage systems, etc., distinguishing between the side of the central pier and the side of the non-central pier, mainly classified as Category A and Category B1.

[0179] Example 9,

[0180] Fault masking:

[0181] To facilitate troubleshooting or emergency handling, fault signals can be alarm-masked, and the masked faults will no longer trigger alarms.

[0182] If a system fault is masked, the system will automatically generate a warning message indicating that the fault is masked (Class A fault).

[0183] Fault Reset:

[0184] To facilitate fault diagnosis and location, the fault state will not disappear automatically after the fault signal triggers the fault. The fault alarm flag can be reset by pressing the fault reset button.

[0185] During PLC startup, the system automatically resets detected faults.

[0186] The fault reset function is prohibited during the operation of the gate valve.

[0187] The fault reset button does not distinguish between centralized control and local control modes.

[0188] Fault confirmation:

[0189] The fault confirmation signal is used to confirm the fault that has occurred. After the fault is confirmed, a fault confirmation flag is added to the fault attribute. The confirmed fault will no longer trigger a buzzer alarm.

[0190] The fault reset signal resets the fault confirmation flag in the fault attributes.

[0191] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The embodiments and features described in these embodiments can be arbitrarily combined without conflict. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A test and processing method for a multi-level ship lock local linkage control system, characterized in that, Includes the following steps: S1, gate closing linkage: Set up a gate closing linkage process in the local system to achieve automatic unlocking and closing of the gate; S2, Water conveyance linkage, sets the local linkage command process, prompts for operation confirmation when the control conditions are met, and starts the linkage control; S3, centralized control test, enables remote centralized monitoring and operation of local gate valves and anti-collision devices through communication with the centralized control system; including communication between the centralized control PLC and the local PLC, and communication between the centralized control I / O server and the local PLC; S4, Lockout Detection, employs hardware lockout to ensure safe operation of the lock; S5, synchronous control, controls the gate waiting position, the miter gate speed change operation, and the miter gate synchronous correction respectively; S6, fault alarm, classifies and defines faults; S7, Fault Handling, involves partitioning, masking, resetting, and confirming faults; In S5, the variable speed operation control of the miter gate includes the following steps: SB5-1, when the gate is opened and closed at a constant speed, the load is saddle-shaped. When the acceleration, constant speed, and deceleration processes of the gate opening and closing are controlled in the opposite way to the saddle shape, the load of the gate hoist is balanced during the gate opening and closing process. SB5-2 automatically calculates the acceleration and deceleration of the gate during variable-speed operation, based on the set constant speed, acceleration and deceleration inflection point settings. SB5-3, for gate speed change operation, both gates must be opened and closed synchronously from the open end position or the closed end position; SB5-4: During the variable speed operation of the gate, synchronous correction control is performed. When the stroke difference between the two gates exceeds the synchronous set value, synchronous correction and variable speed control are stopped, and the gate switches to low speed operation. SB5-5: When a gate is operating on one side, when the gate opening instrument on one side is faulty, when the gate starts to open or close from the middle position, or when the travel difference between the two gates exceeds the synchronization setting value, the gate will open and close at a low speed. SB5-6, In maintenance operation mode, when the gate is opened and closed at low speed, the gate opening and closing speed can be manually increased or decreased via the touch screen; SB5-7: To ensure the consistency of limit switch signals when the gate stops, the gate operates at the stopping speed when the gate opening is close to the final position of the switch.

2. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: in In S1, during the gate closure linkage process, when a ship passes through the gate, a gate closure warning signal is sent, and at the same time the gate is unlocked. If the unlocking is in place, the gate is closed, and a gate closure completion signal is sent after the gate is closed.

3. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: In S2, the water transfer linkage command process includes: S2-1: If the water supply is fault-free, open the valve to supply water. If the water level is horizontal, a gate opening warning will be issued and a gate opening signal will be sent. Once the gate is fully opened, close the valve and the linkage will end. S2-2, When the water supply valve is opened, if the auxiliary valve level signal or the horizontal warning water level difference signal is received, the auxiliary valve will be opened and the horizontal warning will be sent respectively. S2-3: If the water supply is fault-free, open the valve to supply water. If the water level is not horizontal, send a dynamic water shut-off valve signal or open the dynamic water shut-off valve to the set opening degree to supply water. S2-4 If a malfunction occurs during water delivery, the programmable emergency valve will be shut off to terminate the linkage.

4. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: In S3, communication between the centralized control PLC and the local PLC includes: the local PLC sending local control mode, gate valve operation information, hydraulic system operation information, anti-collision operation information, and gate head water level information to the centralized control PLC; and the centralized control PLC sending control command information to the local PLC. Communication between the centralized control I / O server and the local PLC includes: the centralized control I / O server reading local PLC I / O information, fault diagnosis information, complete gate head operation status information, and operation parameter information from the local PLC; and the centralized control I / O server sending control command information and parameter setting information to the local PLC. The information sent from the centralized control system to the local area is a short command message. After receiving the command, the local area judges the operating conditions and executes it automatically. The centralized control system sends the status of the coordinated water supply and water replenishment operation to the local area. If communication or operation is interrupted during the coordinated water supply or water replenishment control, the local area will automatically execute the program-controlled emergency valve shut-off protection. The purpose of testing the centralized control function is to verify the local system and the centralized control interface.

5. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: in In S4, the interlock detection includes the following steps: S4-1, Local PLC collects the signal status of each link in the interlocking signal transmission; S4-2, When the lock operation requires water replenishment, if the local water replenishment permission switch is not set to water replenishment permission, a water replenishment warning will be generated. S4-3, when the gate head forced interlocking switch is not set to forced interlocking permission, automatically reset the local or centralized control software forced interlocking signal; S4-4: The local PLC generates a software interlock signal based on the position information of the upper and lower gate valves and the forced interlock signal from the local or centralized control software. An alarm will be triggered if the software interlock signal is inconsistent with the hardware interlock signal.

6. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: In S5, the gate closing waiting position control includes the following steps: SA5-1, to prevent the guide card from being squeezed and collided when closing the gate, when closing the gate on both sides, it should be ensured that the guide card enters synchronously. When closing the gate on both sides, a synchronous waiting position is set. The synchronous waiting position is determined by the opening meter. The waiting position travel is 7100mm. The waiting position is within ±15mm of the waiting position travel. SA5-2, when the synchronization difference between the two gates exceeds the set range of ±25mm, both gates will unload and wait in the synchronization waiting position before closing the gates synchronously. SA5-3, during the gate closing process, the synchronization difference between the two gates does not exceed the set range, which does not affect the synchronous gate closing and does not require unloading and waiting; SA5-4: When the synchronization difference between the two gates exceeds the set range, and the travel of one gate is greater than the waiting position travel while the travel of the other gate is less than the waiting position travel, the gate must not be closed. When the SA5-5 gate opening device malfunctions on one side, the waiting position cannot be determined. During non-maintenance operation, it is prohibited to close both gates simultaneously. During maintenance operation, the gate can be closed at a low speed.

7. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: In S5, the synchronous correction control of the miter gate includes the following steps: SC5-1 employs synchronous correction control during dual-side gate speed change operation; SC5-2 performs correction control by synchronizing one side gate with the other side gate, and the gate tracking objects can be switched; SC5-3, the gate synchronous correction adopts PID control, and the PID parameters can be set; SC5-4: When the travel difference between the two gates exceeds the synchronous operation setting value, the synchronous correction and speed change control will stop and switch to low-speed operation.

8. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: in In S6, based on operation and maintenance habits, faults are divided into Class A faults, Class B1 faults, Class B2 faults, Class B3 faults, and Class C faults; Class A faults are warning faults and will be alarmed as Class A faults. Class B1 faults are equipment component faults, and the alarm prompts for Class B1 faults will stop the operation of the associated equipment components; Class B2 faults are regional faults, and the alarm prompts for Class B2 faults will be displayed. Class B3 faults are local substation faults and will be alarmed according to Class B3 fault prompts. Class C faults are process protection faults and will be alarmed accordingly.

9. The testing and processing method for the multi-level lock local linkage control system according to claim 1, characterized in that: in In S7, faults are divided into PLC diagnostic faults, gate faults, power supply faults, hydraulic faults, gate faults, valve faults, and auxiliary equipment faults. For faults after being divided, fault masking, fault reset, or fault confirmation are selectively performed.

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